Mr. Biden in 2013 took out a 30-year mortgage from TD Bank on his principal residence, including rental property, with an interest rate of 3.375%, according to his financial disclosure form released Thursday. The loan, valued at between $500,000 and $1 million, replaced his previous mortgage from Wilmington Saving Fund Society, which he took out in 2010. That loan came with a 4.625% interest rate.

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